new generation cordless phones use a 9.00x10^2 MHz frequency and can be operated up to 60.0 m from their base. how many wavelengths of the electromagnetic waves can fit between your ear and a base 60.0 m away?
The number of wavelengths of the electromagnetic waves can fit between your ear and a base 60.0 m away are 180.
The wavelength is the distance between the adjacent crest or trough of the sinusoidal wave. The wavelength is the reciprocal of the frequency of the wave.
Wavelength λ = c/f
where c is the speed of light in vacuum = 310⁸ m/s
Cordless phones use a a frequency of 9.00x10² MHz = 910⁸ Hz, then the wavelength will be
λ = c/f
λ = 310⁸ / 910⁸ = 1/3 m
no. of wavelengths = 60 m /(1/3 m) = 180
Thus, the number of wavelengths of the electromagnetic waves can fit are 180.
Learn more about wavelength.
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